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Neutron ml2 with openvswitch: only VLANs and no tunneling

asked 2015-03-25 20:10:08 -0500

GLaupre gravatar image

updated 2015-03-26 11:31:21 -0500


I am tying to do a simple setup using devstack with the parameter ENABLE_TENANT_TUNNELS=False. I just want to have my instances on my compute node attached to the br-int bridge and the latest attached directly to my physical interface (no br-tun then). I want to use only VLANs and no tunnelling mechanisms.

First of all, is it possible to do so or I will need anyway to create a bridge br-eth to patch my br-int with my physical interface "eth1"? I took the idea here: image description ( slide 7)

If I do need this bridge br-eth1, I am confused and I don't really understand it purpose. What it is used for?

Thank you very much :)

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answered 2015-03-27 12:52:40 -0500

GLaupre gravatar image

updated 2015-03-27 12:54:48 -0500

What I did was to create the bridge by hand before deploying devstack:

ovs-vsctrl add-br br-enp2s0f4

And in the local.conf file of the controller node I added: For the ml2 conf


For ovs conf


Now it works, and all the traffic goes through my physic interface enp2s0f4.

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answered 2015-03-26 15:26:14 -0500

jdexter gravatar image

It is possible to do what you ask. And in this br-eth1 would be needed as its an abstration used by OVS to connect to your physical device.

There is a good write up on using a vlan provider network on the RDO sight. Just change all of the references of quantum to Neutron.

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Thank you, I'll take a look

GLaupre gravatar imageGLaupre ( 2015-03-27 13:58:48 -0500 )edit

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Asked: 2015-03-25 20:10:08 -0500

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Last updated: Mar 27 '15